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iocost_monitor: improve it by adding iocg wait_ms
The iocg can have three throttled metrics: wait, debt, delay. This patch add missing wait_ms to IocgStat to show the latest wait_ms of iocg. As we are here, group iocg usage percents "inflt%" and "usage%" together, and group iocg throttled metrics "wait", "debt" and "delay" together. Effect after changes: nvme0n1 RUN per=50.0ms cur_per=177105.713:v1053528.587 busy= +0 vrate=135.00%:270.00% params=ssd_dfl(CQ) active weight hweight% inflt% usage% wait debt delay InterfererGroup0 * 100/ 100 54.28/ 9.09 0.34 24.07 0.00 0.00 0.00 interfered * 84/ 1000 45.72/ 90.91 0.48 41.09 0.00 0.00 0.00 Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com> Acked-by: Tejun Heo <tj@kernel.org> Link: https://lore.kernel.org/r/20230804065039.8885-3-chengming.zhou@linux.dev Signed-off-by: Jens Axboe <axboe@kernel.dk>
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@ -138,7 +138,7 @@ class IocStat:
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def table_header_str(self):
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return f'{"":25} active {"weight":>9} {"hweight%":>13} {"inflt%":>6} ' \
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f'{"debt":>7} {"delay":>7} {"usage%"}'
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f'{"usage%":>6} {"wait":>7} {"debt":>7} {"delay":>7}'
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class IocgStat:
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def __init__(self, iocg):
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@ -164,6 +164,8 @@ class IocgStat:
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self.usage = (100 * iocg.usage_delta_us.value_() /
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ioc.period_us.value_()) if self.active else 0
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self.wait_ms = (iocg.stat.wait_us.value_() -
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iocg.last_stat.wait_us.value_()) / 1000
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self.debt_ms = iocg.abs_vdebt.value_() / VTIME_PER_USEC / 1000
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if blkg.use_delay.counter.value_() != 0:
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self.delay_ms = blkg.delay_nsec.counter.value_() / 1_000_000
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@ -180,9 +182,10 @@ class IocgStat:
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'hweight_active_pct' : self.hwa_pct,
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'hweight_inuse_pct' : self.hwi_pct,
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'inflight_pct' : self.inflight_pct,
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'usage_pct' : self.usage,
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'wait_ms' : self.wait_ms,
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'debt_ms' : self.debt_ms,
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'delay_ms' : self.delay_ms,
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'usage_pct' : self.usage,
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'address' : self.address }
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return out
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@ -192,9 +195,10 @@ class IocgStat:
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f'{round(self.inuse):5}/{round(self.active):5} ' \
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f'{self.hwi_pct:6.2f}/{self.hwa_pct:6.2f} ' \
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f'{self.inflight_pct:6.2f} ' \
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f'{min(self.usage, 999):6.2f} ' \
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f'{self.wait_ms:7.2f} ' \
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f'{self.debt_ms:7.2f} ' \
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f'{self.delay_ms:7.2f} '\
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f'{min(self.usage, 999):6.2f}'
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f'{self.delay_ms:7.2f}'
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out = out.rstrip(':')
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return out
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